the Bends >Kid A > Ok computer > Amnesiac > HTTT > Pablo Honey
I say the bends is my favorite because its so easy to listen to at any time, it can be listened to while driving or surfing the web or playing some Mario Kart, and for that reason I've come to really love it. Kid A is probably the best Album altogether but I feel like I need to invest the proper amount of time and proper amount of attention into it before I feel comfortable placing it in my CD player.
I love the first half of Ok Computer, but I often times get a little anxious on the second half of the album, the songs start to melt together and my attention wanes. Parts of Amnesiac are stellar, while other parts not so much. And Hail to the Theif feels like a compromise of sorts, an attempt to please both camps in the radiohead kingdom, some kid A/amnesiac, some bends/ok computer, but it has some great moments (the raindrops,the raindrops,the raindrops,the raindrops,the raindrops,the raindrops,...)
As for Pablo Honey...well...everyone's got to start somewhere, and its a decent start